If the Circumference is 6 ft. What is the radius?
6 Answers
academicsfirst | High School Teacher | (Level 2) Adjunct Educator
We are given the circumference of a circle. We are asked to find the radius.
We will use the formula Circumference = 2pi(radius)
=> C=2pi(r)
=> Substitute 3.14 for pi, and 6 for C
=> 6 = 2(3.14)r
=> 6 = 6.28r
=> .955 =r
=> The radius is approximately .96 ft.
lucario | Student, Grade 7 | (Level 1) Honors
0.95
taangerine | Student, Grade 12 | (Level 1) Valedictorian
What we know:
- C= `2pir`
- C=6 ft
- `pi=3.14`
Combine first 2 equations.
- `6=2pir`
Divide `2pi` on both sides.
- `((6)/(2pi))=r`
Simplify
- r=`3/pi ft`
nisarg | Student, Grade 11 | (Level 1) Valedictorian
6=2`pi r`
`3/pi= r`
` `
` `
michaelcoffey | College Teacher | eNotes Newbie
First, divide the given circumference by 3.14 to get the diameter.
6/3.14=1.91
Second, Divide the answer by 2 to get the radius.
1.91/2 = .955
sweetteach | Teacher | eNotes Newbie
To find the radius of a circle using the given circumference we use the formula for finding Circumference.
C=2pi(r)
Using 3.14 for pi and 6 for the Circumference, we solve for r (radius).
6=2(3.14)r (multiply 2 times pi)
6=6.28r (divide each side of the equal sign by 6.28)
r≈.955 (the result is that r is approximately .955)
Rounding to the nearest hundredths place the radius is about .96 ft.